GPT-4 Turbo vs Grok-4 Heavy
OpenAI vs xAI — benchmarks, pricing, and capabilities side by side.
- •Grok-4 Heavy has the higher intelligence index (89.3 vs 59.8)
| GPT-4 Turbo | Grok-4 Heavy | |
|---|---|---|
| Intelligence index | 59.8 | 89.3 |
| Developer | OpenAI | xAI |
| Type | Multimodal | Multimodal |
| Access | API only | API only |
| Context window | 128,000 tokens | — |
| Input price | $10.00 / 1M | — |
| Output price | $30.00 / 1M | — |
| Speed | 100 tok/s | — |
| Released | November 6, 2023 | July 9, 2025 |
| Parameters | — | — |
| Input modalities | Text, Image | — |
| Output modalities | Text | — |
Shared benchmarks
GPT-4 Turbo
Grok-4 Heavy
GPQA Diamond
48
88.4
Humanity’s Last Exam
3.3
50.7
LiveCodeBench
29.1
79.4